CN110074749B - High-speed dynamic laryngoscope device and use method thereof - Google Patents
High-speed dynamic laryngoscope device and use method thereof Download PDFInfo
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- CN110074749B CN110074749B CN201910479279.9A CN201910479279A CN110074749B CN 110074749 B CN110074749 B CN 110074749B CN 201910479279 A CN201910479279 A CN 201910479279A CN 110074749 B CN110074749 B CN 110074749B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000003384 imaging method Methods 0.000 claims abstract description 76
- 210000001260 vocal cord Anatomy 0.000 claims abstract description 47
- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 7
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- 230000008569 process Effects 0.000 abstract description 10
- 230000000737 periodic effect Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
- A61B1/053—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion being detachable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/267—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
- A61B1/2673—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes for monitoring movements of vocal chords
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Abstract
The invention discloses a high-speed dynamic laryngoscope device and a use method thereof, wherein the high-speed dynamic laryngoscope device comprises an installation shell, an external imaging light path, a lens group, a high-speed camera and a controller; the external imaging light path is arranged at the front end of the installation shell and is used for collecting images of vocal cords; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera is arranged on the mounting shell, and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller; the high-speed camera is used as a core element for shooting the vocal cord vibration image, images of the single vocal cord vibration period process can be shot continuously, and the period and non-periodic characteristics in the vibration process are displayed.
Description
Technical Field
The invention relates to the technical field of laryngoscopes, in particular to a high-speed dynamic laryngoscope device and a use method thereof.
Background
Laryngoscopes are medical devices commonly used in oral and tracheal medical procedures, and because of the deep laryngeal position, the physiological structure is complex, direct observation cannot be performed, and laryngeal inspection often requires the aid of the laryngoscopes. Whereas vocal cords sound production is a vibration process, a common laryngoscope cannot observe and accurately record the dynamic process.
As chinese patent CN201580077776.6, a video laryngeal endoscope system with functions of plane scanning video recording and stroboscopic laryngoscope is disclosed, including laryngoscopes for observing vocal cords; a light source for irradiating the vocal cords; a video camera including a beam splitter for separating an image observed by the laryngoscope and the light source into two images, and obtaining a planar scanning oscillographic image and a stroboscopic image; a computer including a dual image capturing section that converts two video signals transmitted from the video camera into digital video signals, a storage section that stores the digital video signals, a control section that causes the video signals of the storage section to be analyzed and simultaneously displays analysis results of the planar scanning recorded video and the stroboscopic video on a display, and analysis software that analyzes the video signals of the storage section; and a display that displays the planar scanning oscillographic image and the stroboscopic image simultaneously, and displays the analysis result.
In the prior art, a strobe laryngoscope replaces a stable light source by a strobe light source, so that the flashing frequency of the light source is matched with the vocal cord sounding frequency, the acquisition time interval of a camera image is set to be an integral multiple of the vocal cord vibration period, and fixed phase delay is kept between adjacent images. Thus, the complete process of vocal cord vibration can be pieced together by using images with certain phase intervals in a plurality of periods, but the technology cannot display the non-periodic vibration characteristics of the vocal cords.
Disclosure of Invention
In view of the above problems of the prior art, the present invention is directed to a high-speed dynamic laryngoscope device and a method for using the same, which can collect both periodic vibration images and aperiodic images of the vocal cords, and has the advantages of simple and firm structure and convenient use.
An aspect of the present invention provides a high speed dynamic laryngoscope device comprising a mounting housing, an external imaging optical path, a lens group, a high speed camera and a controller; the external imaging light path is arranged at the front end of the installation shell and is used for collecting images of vocal cords; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera is mounted on the mounting housing, and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller.
Further, the controller is connected with a single shooting timing device, and the single shooting timing device is used for controlling the on/off of the high-speed camera and the shooting time length.
Further, the lens group comprises a front lens arranged at the front end of the installation shell and a rear lens arranged at the rear end of the installation shell.
Further, the front lens is arranged at the front end of the mounting shell through a front lens mounting frame, and the rear lens is arranged at the rear end of the mounting shell through a rear lens mounting frame.
Further, the surface of the mounting shell is provided with a score line.
Further, the front lens is arranged at the front end of the installation shell through a front lens mounting frame and used for adjusting the area of the collected pixels through a front lens driving motor, and the rear lens is arranged at the rear end of the installation shell through a rear lens mounting frame and used for adjusting the imaging focal length through a rear lens driving motor.
Further, the front lens driving motor is connected with a first motor driver, and the rear lens driving motor is connected with a second motor driver.
Further, the external imaging optical path comprises an external optical path, an illumination light source and an illumination fiber bundle; one end of the illumination optical fiber bundle is connected with the external optical path, and the other end of the illumination optical fiber bundle is connected with the illumination light source.
In another aspect of the invention there is provided a method of using a high speed dynamic laryngoscope device comprising the steps of:
s1, the external imaging light path is arranged at the front end of the installation shell and acquires images of vocal cords; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera is arranged on the mounting shell, and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller;
s2, the controller is connected with a single shooting timing device, and the single shooting timing device is used for controlling the high-speed camera to be started or stopped; when the single shooting timing device is used, the single shooting timing device is controlled by external manual actions such as a foot switch in manual operation; when the controller triggers a mode, the vocal cord images acquired by the high-speed camera are sent to the controller, the controller controls the single shooting timing device according to the vocal cord images acquired by the external imaging light path, and then the high-speed camera is started to shoot continuous images at a certain time interval;
s3, the lens group comprises a front lens arranged at the front end of the installation shell and a rear lens arranged at the rear end of the installation shell; the front lens and the rear lens are manually or automatically adjusted; when in manual adjustment, a scribing line is arranged on the surface of the installation shell; according to the scribing on the surface of the mounting shell, the front lens is moved to a proper position through the front lens mounting frame, and the area of the collected pixels is adjusted; then adjusting the imaging focal length of the rear lens through the rear lens mounting frame; during automatic adjustment, the controller drives the front lens mounting frame through the front lens driving motor controlled by the first motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so as to drive the front lens to be adjusted to a proper position, and drives the rear lens mounting frame through the rear lens driving motor controlled by the second motor driver, so as to drive the rear lens to adjust the imaging focal length.
Compared with the prior art, the invention has the beneficial effects that: the high-speed camera is used as a core element for shooting the vocal cord vibration image, images of the single vocal cord vibration period process can be shot continuously, and the period and non-periodic characteristics in the vibration process are displayed. The size of the shooting area of the high-speed camera is set through the controller, and the imaging adjusting light path adjusts proper imaging area and focal length according to the size of the shooting area of the high-speed camera.
The imaging adjusting light path can adopt two adjusting modes: automatic or manual. Under the manual adjustment mode, the front lens is moved to a proper position through the front lens mounting rack according to the scribing on the surface of the mounting shell, and the area of the collected pixels is adjusted; then the imaging focal length of the rear lens is adjusted through the rear lens mounting frame, so that the high-speed camera can be ensured to shoot clear images; in an automatic adjusting mode, the controller controls the front lens driving motor to drive the front lens mounting frame through the first motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so that the front lens is driven to be adjusted to a proper position, and the proper imaging area is ensured; the controller controls the rear lens driving motor to drive the rear lens mounting frame to adjust the imaging focal length through the second motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so that the focal length change caused by temperature rise of the device can be compensated in real time, and meanwhile, the shot image is ensured to be clear.
After the light path is adjusted, the controller sets proper single shooting time for the single shooting timing device, and then the single shooting timing device is started in a manual or controller triggering mode, so that the high-speed camera continuously shoots sound belt vibration images for a certain time.
Drawings
FIG. 1 is a schematic view of the structure of the high speed dynamic laryngoscope device of the invention in manual adjustment;
fig. 2 is a schematic view of the structure of the high-speed dynamic laryngoscope device according to the invention in an automatic adjustment mode.
In the accompanying drawings: 1. controller, 2, high speed camera, 3, first motor drive, 4, front lens drive motor, 5, front lens mount, 6, front lens drive lead screw, 7, mounting housing, 8, external light path, 9, vocal cords, 10, illumination light source, 11, illumination fiber optic bundle, 12, front lens, 13, rear lens, 14, rear lens drive lead screw, 15, rear lens mount, 16, rear lens drive motor, 17, single shot timing device, 18, second motor drive.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown, a high speed dynamic laryngoscope apparatus comprises a mounting housing 7, an external imaging optical path, a lens group, a high speed camera 2 and a controller 1; the external imaging light path is arranged at the front end of the installation shell 7 and acquires images of the vocal cords 9; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera 2 is mounted on the mounting housing 7, and one end far away from the external imaging light path is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller 1, and the external imaging light path is fixed relative to the high-speed camera 2, so that the device is firm and durable, wherein in the embodiment, the controller 1 can be a computer, a tablet or a mobile phone.
The controller 1 is connected with a single shooting timing device 17, the single shooting timing device 17 is used for controlling the on/off of the high-speed camera 2 and the shooting time length, after the external imaging light path is adjusted, the controller 1 sets proper single shooting time for the single shooting timing device 17, then the single shooting timing device 17 is started in a manual or controller 1 triggering mode, and the high-speed camera 2 continuously shoots vocal cord vibration images for a certain time; the single shooting timing device 17 is controlled by an external manual action such as a foot switch when manual control is adopted, when the controller 1 triggers a mode, the vocal cord images acquired by the high-speed camera 2 are sent to the controller 1, the controller 1 controls the single shooting timing device 17 according to the vocal cord images acquired by an external imaging light path, and then the controller 1 triggers a signal to control the high-speed camera 2 to shoot continuous images at a certain time interval, so that the situation that a large number of redundant images are acquired in a single shooting process of the high-speed camera 2 and memory is consumed is avoided.
The lens group includes a front lens 12 provided at the front end of the mounting housing 7 and a rear lens 13 provided at the rear end of the mounting housing 7.
As shown in fig. 1, in the manual adjustment mode of the lens group, the front lens 12 is disposed at the front end of the mounting housing 7 through the front lens mounting frame 5, and the rear lens 13 is disposed at the rear end of the mounting housing through the rear lens mounting frame 15.
The surface of the mounting shell 7 is provided with a scribing line which respectively represents different imaging areas and corresponding focal length positions; under the manual adjustment mode, the front lens 12 is moved to a proper position through the front lens mounting frame 5 according to the scribing on the surface of the mounting shell, and the area of the collected pixels is adjusted; then the imaging focal length of the rear lens 13 is adjusted through the rear lens mounting frame 15, so that the high-speed camera 2 can be ensured to shoot clear images.
As shown in fig. 2, when the lens group is automatically adjusted, the front lens 12 is arranged at the front end of the mounting shell 7 through a front lens mounting frame 5 and the area of the collected pixels is adjusted through a front lens driving motor 4, and the rear lens 13 is arranged at the rear end of the mounting shell through a rear lens mounting frame 15 and the imaging focal length is adjusted through a rear lens driving motor 16; the front lens driving motor 4 is provided with a first motor driver 3 in a connecting way, and the rear lens driving motor 16 is provided with a second motor driver 18 in a connecting way; in an automatic adjustment mode, the controller 1 controls the front lens driving motor 4 to drive the front lens mounting frame 5 through the first motor driver 3 according to the characteristic of the vocal cord image acquired by the external imaging light path, so as to drive the front lens 12 to be adjusted to a proper position, and ensure proper imaging area; the controller 1 controls the rear lens driving motor 16 to drive the rear lens mounting frame 15 to adjust the imaging focal length through the second motor driver 18 according to the characteristic of the vocal cord image collected by the external imaging light path, and the focal length change caused by temperature rise of the device can be compensated in real time in an automatic adjustment mode, further, a transmission screw is arranged on the mounting shell 7 in the automatic adjustment mode, and the front lens mounting frame 5 and the rear lens mounting frame 15 are both displaced on the transmission screw.
The external imaging optical path comprises an external optical path 8, an illumination light source 10 and an illumination optical fiber bundle 11; one end of the illumination fiber bundle 11 is connected to the external light path 8, and the other end of the illumination fiber bundle is connected to the illumination light source 10, so as to provide an illumination light source for the outside.
Another aspect of the invention provides a method of using a high speed dynamic laryngoscope device, comprising the steps of;
s1, the external imaging light path is arranged at the front end of the installation shell 7 and acquires images of vocal cords 9; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera 2 is arranged on the mounting shell 7, and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller 1;
s2, the controller 1 is connected with a single shooting timing device 17, and the single shooting timing device 17 is used for controlling the on or off of the high-speed camera 2 and the shooting time length; when the single shooting timing device 17 is used, the single shooting timing device is controlled by external manual actions such as a foot switch in manual operation; when the controller 1 triggers the mode, the vocal cord images acquired by the high-speed camera 2 are sent to the controller 1, the controller 1 controls the single shooting timing device 17 according to the vocal cord images acquired by the external imaging light path, and then the high-speed camera is started to shoot continuous images at a certain time interval;
s3, the lens group comprises a front lens 12 arranged at the front end of the mounting shell 7 and a rear lens 13 arranged at the rear end of the mounting shell 7; the front lens 12 and the rear lens 13 are manually or automatically adjusted; when in manual adjustment, the surface of the installation shell 7 is provided with a scribing line; according to the scribing on the surface of the mounting shell, the front lens 12 is moved to a proper position through the front lens mounting frame 5, and the area of the collected pixels is adjusted; then the imaging focal length of the rear lens 13 is adjusted through the rear lens mounting frame 15; during automatic adjustment, the controller 1 controls the front lens driving motor 4 to drive the front lens mounting frame 5 and further drive the front lens 12 to adjust to a proper position through the first motor driver 3 according to the characteristic of the vocal cord image collected by the external imaging light path, and the controller 1 controls the rear lens driving motor 16 to drive the rear lens mounting frame 15 and further drive the rear lens 13 to adjust the imaging focal length through the second motor driver 18.
The high-speed camera is used as a core element for shooting the vocal cord vibration image, images of a single vocal cord vibration process can be continuously shot, and periodic and aperiodic features in the vibration process are displayed. The size of the shooting area of the high-speed camera is set through the controller, and the imaging adjusting light path adjusts proper imaging area and focal length according to the size of the shooting area of the high-speed camera.
The high-speed dynamic laryngoscope device can adopt two adjusting modes for imaging adjusting light paths: automatic or manual. Under the manual adjustment mode, the front lens is moved to a proper position through the front lens mounting rack according to the scribing on the surface of the mounting shell, and the area of the collected pixels is adjusted; then the imaging focal length of the rear lens is adjusted through the rear lens mounting frame, so that the high-speed camera can be ensured to shoot clear images; in an automatic adjusting mode, the controller controls the front lens driving motor to drive the front lens mounting frame through the first motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so that the front lens is driven to be adjusted to a proper position, and the proper imaging area is ensured; the controller controls the rear lens driving motor to drive the rear lens mounting frame to adjust the imaging focal length through the second motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so that the focal length change caused by the temperature rise of the device can be compensated in real time, and meanwhile, the shot image is ensured to be clear.
After the light path is adjusted, the controller sets proper single shooting time for the single shooting timing device, and then the single shooting timing device is started in a manual or controller triggering mode, so that the high-speed camera continuously shoots sound belt vibration images for a certain time.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A high speed dynamic laryngoscope device, characterized by: comprises a mounting shell (7), an external imaging light path, a lens group, a high-speed camera (2) and a controller (1); the external imaging light path is arranged at the front end of the mounting shell (7) and is used for collecting images of the vocal cords (9); the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera (2) is arranged on the mounting shell (7), and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller (1); the lens group comprises a front lens (12) arranged at the front end of the mounting shell (7) and a rear lens (13) arranged at the rear end of the mounting shell (7); the front lens (12) is arranged at the front end of the mounting shell (7) through a front lens mounting frame (5), and the rear lens (13) is arranged at the rear end of the mounting shell through a rear lens mounting frame (15); the front lens (12) is arranged at the front end of the mounting shell (7) through a front lens mounting frame (5) and used for adjusting the area of the collected pixels through a front lens driving motor (4), and the rear lens (13) is arranged at the rear end of the mounting shell through a rear lens mounting frame (15) and used for adjusting the imaging focal length through a rear lens driving motor (16); the controller (1) is connected with a single shooting timing device (17), and the single shooting timing device (17) is used for controlling the on or off of the high-speed camera (2) and the shooting time length.
2. The high speed dynamic laryngoscope device according to claim 1, wherein: the surface of the mounting shell (7) is provided with a scribing line.
3. The high speed dynamic laryngoscope device according to claim 1, wherein: the front lens driving motor (4) is connected with a first motor driver (3).
4. The high speed dynamic laryngoscope device according to claim 1, wherein: the rear lens driving motor (16) is connected with a second motor driver (18).
5. The high speed dynamic laryngoscope device according to claim 1, wherein: the external imaging optical path comprises an external optical path (8), an illumination light source (10) and an illumination fiber bundle (11); one end of the illumination fiber bundle (11) is connected with the external light path (8), and the other end of the illumination fiber bundle is connected with the illumination light source (10).
6. A method of using a high speed dynamic laryngoscope device according to any one of claims 1 to 5, wherein the high speed dynamic laryngoscope device comprises, in use, the steps of: s1, a high-speed dynamic laryngoscope device comprises a mounting shell, an external imaging light path, a lens group, a high-speed camera and a controller; the external imaging light path is arranged at the front end of the installation shell and is used for collecting images of vocal cords; the lens group is arranged on the mounting shell through a lens adjusting mechanism and manually or automatically adjusts the imaging area and the focal length; the high-speed camera is arranged on the mounting shell, and one end of the high-speed camera, which is far away from the external imaging light path, is used for acquiring images of vocal cords acquired by the external imaging light path and sending the images to the controller; s2, the controller is connected with a single shooting timing device, and the single shooting timing device is used for controlling the high-speed camera to be started or stopped; when the single shooting timing device is used, the single shooting timing device is controlled by external manual actions such as a foot switch in manual operation; when the controller triggers a mode, the vocal cord images acquired by the high-speed camera are sent to the controller, the controller controls the single shooting timing device according to the vocal cord images acquired by the external imaging light path, and then the high-speed camera is started to shoot continuous images at a certain time interval; s3, the lens group comprises a front lens arranged at the front end of the installation shell and a rear lens arranged at the rear end of the installation shell; the front lens and the rear lens are manually or automatically adjusted; when in manual adjustment, a scribing line is arranged on the surface of the installation shell; according to the scribing on the surface of the mounting shell, the front lens is moved to a proper position through the front lens mounting frame, and the area of the collected pixels is adjusted; then adjusting the imaging focal length of the rear lens through the rear lens mounting frame; during automatic adjustment, the controller drives the front lens mounting frame through the front lens driving motor controlled by the first motor driver according to the characteristic of the vocal cord image acquired by the external imaging light path, so as to drive the front lens to be adjusted to a proper position, and drives the rear lens mounting frame through the rear lens driving motor controlled by the second motor driver, so as to drive the rear lens to adjust the imaging focal length.
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| CN107157432A (en) * | 2016-03-08 | 2017-09-15 | 苏州速迈医疗设备有限公司 | Medical otoscope |
| CN107822587A (en) * | 2017-10-16 | 2018-03-23 | 上海市第妇婴保健院 | A kind of built-in gynecatoptron |
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